This high concentration formula works great. My dog is 15 and can barely walk . If I give it to him every day in his food he's able to go on two nice long walks a day.
Have had my 9 year old Shepherd mix dog on this product for about 2-1/2 weeks now. She
seems to be more active and can manage going upstairs, in particular, a little better. I hope she continues to improve!
I get this for my now 13-year-old husky she's been taking it for a year and although she getting older I can tell she still moves around freely & feels better and even likes to run when we take her 2 sometimes 3 walks a day .